Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ko Byong UkfiledCriticalKo Byong Uk
Priority to KR8310871UpriorityCriticalpatent/KR850003157Y1/en
Application grantedgrantedCritical
Publication of KR850003157Y1publicationCriticalpatent/KR850003157Y1/en